Hong Kong allows foreign exchange. But in Hong Kong, all regular foreign exchange dealers must accept the supervision of the Hong Kong Securities Regulatory Commission. At the same time, the CSRC stipulates that the maximum leverage that foreign exchange dealers can operate is only 20 times, and anything over 20 times is informal. But many companies in Hong Kong advertise that they can do it 100 times in the Mainland. These are all acts of foreign exchange dealers in Hong Kong to make money in the Mainland by using the provisions of the CSRC, which are not standardized.